== ( or ===)

[extra]

Hi.. This is a stupid question but why not give it a try?

is[php]<?php
if($var1 == $var2){}
?>[/php]
the same as[php]<?php
if($var2 == $var1){}
?>[/php]
?

also, what is recommended to use, == or === ?

[Tino]

Well, it is, but if you want to see if $var1 is equal to something, it doesn't make sense to make it the right-hand operand. It's not semantically correct.

As far as I know, it doesn't matter if you use == or ===. I guess === is a little bit more secure or something, otherwise I don't really see how it could be significantly superior.

[wide_load]

Well, it is, but if you want to see if $var1 is equal to something, it doesn't make sense to make it the right-hand operand. It's not semantically correct.

As far as I know, it doesn't matter if you use == or ===. I guess === is a little bit more secure or something, otherwise I don't really see how it could be significantly superior.

no

not at all

=== also checks the data type for example
[php]if (true == 1){
// this would be executed
}

if (true === 1){
// this would not be executed
}[/php]

nothing to do with security at all.

=== is technically faster, as == converts each side to all of the possible data types for comparison where as === just compares them.

finally the order in the if statement does not matter in the slightest as if x = y then that also means that y = x

[Tino]

=== also checks the data type for example

Yes, I knew that. I just didn't know if there was any particular reason for its existence, so just made a random guess that it had something to do with security :3

[wide_load]

=== also checks the data type for example

Yes, I knew that. I just didn't know if there was any particular reason for its existence, so just made a random guess that it had something to do with security :3

it exists so that you can also check the data type

[Cags]

The main use is generally when checking a return value from a function since it can tell the difference between FALSE and 0.

[Pagweb]

The === checks two things, that the values and data types are the same.
Example:
5 == "5" is true
5 === "5" is false because they are not the same data type.